#include<bits/stdc++.h>
using namespace std;

string s;
int n, m;
int main()
{
	freopen("replace.in", "r", stdin);
	freopen("replace.out", "w", stdout);
	cin>>n>>m;
	for(int i=1; i<=n; i++) cin>>s>>s;
	for(int i=1; i<=m; i++) cin>>s>>s;
	
	printf("2\n0");	
}
